submount.8

来自「linux下mount各种文件系统的程序submount的源代码」· 8 代码 · 共 151 行

.\" $Header: /aolnet/dev/src/CVS/sgml/docbook-to-man/cmd/docbook-to-man.sh,v 1.1.1.1 1998/11/13 21:31:59 db3l Exp $
.\"
.\"	transcript compatibility for postscript use.
.\"
.\"	synopsis:  .P! <file.ps>
.\"
.de P!
.fl
\!!1 setgray
.fl
\\&.\"
.fl
\!!0 setgray
.fl			\" force out current output buffer
\!!save /psv exch def currentpoint translate 0 0 moveto
\!!/showpage{}def
.fl			\" prolog
.sy sed -e 's/^/!/' \\$1\" bring in postscript file
\!!psv restore
.
.de pF
.ie     \\*(f1 .ds f1 \\n(.f
.el .ie \\*(f2 .ds f2 \\n(.f
.el .ie \\*(f3 .ds f3 \\n(.f
.el .ie \\*(f4 .ds f4 \\n(.f
.el .tm ? font overflow
.ft \\$1
..
.de fP
.ie     !\\*(f4 \{\
.	ft \\*(f4
.	ds f4\"
'	br \}
.el .ie !\\*(f3 \{\
.	ft \\*(f3
.	ds f3\"
'	br \}
.el .ie !\\*(f2 \{\
.	ft \\*(f2
.	ds f2\"
'	br \}
.el .ie !\\*(f1 \{\
.	ft \\*(f1
.	ds f1\"
'	br \}
.el .tm ? font underflow
..
.ds f1\"
.ds f2\"
.ds f3\"
.ds f4\"
'\" t
.ta 8n 16n 24n 32n 40n 48n 56n 64n 72n
.TH "SUBMOUNT" "8"
.SH "NAME"
SUBMOUNT \(em automatically mounts and unmounts removable media devices.

.SH "SYNOPSIS"
.PP
\fBsubmount\fR
.PP
A system for accessing removable media devices without manually
remounting them between media changes.
.SH "DESCRIPTION"
.PP
This manual page briefly documents the
\fBsubmount\fR       system.
.PP
\fBSubmount\fR is a program that automatically
mounts removable media devices or other filesystems when the mount
directory is accessed, and unmounts them when they are no longer
in use.  It requires two parts: the subfs.o kernel module and the
submountd program.  Submountd should never be accessed directly by
the user.
.PP
To invoke submount, use the mount(3) command, or edit the
relevant entries in the fstab(5) file.  Devices mounted to use
submount should use \fBsubfs\fP as the filesytem type,
and add the option \fBfs=< true filesystem > \fP to the
list of options.


.PP
eg. mount -t subfs /dev/scd0 /cdrom -o fs=iso9660,ro

.PP
To edit the fstab(5) file, one should also remove the "user",
"owner" and "noauto" options.  eg.

.PP
/dev/scd0 /cdrom udf:iso9660 ro,noauto,owner 0 0

.PP
becomes

.PP
/dev/scd0 /cdrom subfs fs=udf:iso9660,ro 0 0

.PP
The \fBfs=\fP can take an individual filesystem,
a colon-seperated list of filesystems, which submountd will attmept
to mount in the order in which they appear in the list, or a built-in
list.  As of version 0.5, the available lists are \fBcdfss\fP     and \fBfloppyfss\fP, which include the filesystems most commonly
used on CD and floppy devices respectively.  You may also use
\fBfs=auto\fP, in which case, submountd will attempt to
determine the filesystem by reading the device's superblock.

.PP
\fBprocuid\fP can be added to the list of options if you wish to mount
the filesystem with the UID and GID numbers of the calling process.  This
can be useful for some security strategies.

.PP
If you want to mount nfs or another network filesystem, use the
alternative program net-submountd by adding \fBprogram=/sbin/net-submountd\fP
to the list of options.  The net-submountd program takes the
option \fBinterval=\fPXX where XX represents the time in seconds
submount will wait between attempts to unmount the filesystem.  If
no value is give, net-submountd will default to a 15 second interval.

.PP
The net-submountd program is intended for use for simple network shares
only, where editing /etc/auto.master and related files are a hassle rather
than an opportunity to automate the configuration of many shares.  For complex
nfs setups automount is, and will continue to be the appropriate tool.
An example with nfs(5):

.PP
192.168.1.12:/myshare /mnt/myshare nfs rsize=8192,....

.PP
becomes

.PP
192.168.1.12:/myshare /mnt/myshare subfs fs=nfs,program=/sbin/net-submount,....

.SH "SEE ALSO"
.PP
mount(3), fstab(5), nfs(5).
.PP
Additional documentation may be found at \fI    http://submount.sourceforge.net\fP
.SH "AUTHOR"
.PP
This manual page was written by Eugene S. Weiss [e-mail].
Permission is
granted to copy, distribute and/or modify this document under
the terms of the GNU General Public License, Version 2 any
later version published by the Free Software Foundation.

.\" created by instant / docbook-to-man, Mon 8, Dec 2003, 09:12